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    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    <script>
      // document.write(Math.floor(Math.random()*(10+1)))
      //随机生成0-10任意数字
      
       //document.write(Math.floor(Math.random()*(5+1))+5)
       //随机生成5-10任意数字

        //document.write(Math.floor(Math.random()*(M-N+1))+N)
        //随机生成N-M任意数字
       

       
        

    </script>
  
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